Write NFC-A host-based card emulation for CPR 40.30 reader
Question
HCE was implemented in the Android 4.4, but there is very little information regarding how to write in an emulated card.
- I have CPR 40.30 reader
- This reader came along with some sample NFC cards. I read these cards using a NFC card reading app.
NFC card details that are compatible with CPR 40.30
IC manufacturer: NXP Semiconductors
IC type: MIFARE Ultralight (MF0ICU1) -- NDEF ------------------------------ NFC data set storage not present: Maximum NDEF storage size after format: 46 bytes -- EXTRA ------------------------------ Memory size: 64 bytes total memory * 16 pages, with 4 bytes per page * 48 bytes user memory (12 pages) -- TECH ------------------------------ Technologies supported: ISO/IEC 14443-3 (Type A) compatible ISO/IEC 14443-2 (Type A) compatible Android technology information: Tag description: * TAG: Tech [android.nfc.tech.NfcA, android.nfc.tech.MifareUltralight, android.nfc.tech.NdefFormatable] android.nfc.tech.NdefFormatable android.nfc.tech.MifareUltralight android.nfc.tech.NfcA * Maximum transceive length: 253 bytes * Default maximum transceive time-out: 2000 ms Detailed protocol information: ID: 04:AC:91:52:CB:29:80 ATQA: 0x4400 SAK: 0x00
I want to write HCE code and want my Android phone to act like a card which can be read by CPR 40.30 reader. I'm assuming the HCE code should emulate a card with the above mentioned specifications, as the above NFC card can be read by the reader.
The only useful sample code I have found till now for HCE is this , but it uses ISO-DEP. I want to use NFC-A (ISO/IEC 14443 type A) instead.
How can I write code to emulate an NFC-A card?
Referred Links:
1 answers
solution1
0 ACCPTED 2014-12-30 09:57:19
Android only supports emulation of ISO/IEC 7816-4 application structures on top of ISO-DEP (ISO/IEC 14443-4). The Android API does not provide any means to access emulation of lower protocol layers.
From the developer guide :
Specifically, Android 4.4 supports emulating cards that are based on the NFC-Forum ISO-DEP specification (based on ISO/IEC 14443-4) and process Application Protocol Data Units (APDUs) as defined in the ISO/IEC 7816-4 specification.
Note that the CPR 40.30 should support ISO-DEP too.
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